Improved machine for drawing cartridge-shells



A. S. WARNER.

Machine for Drawing Cartridge Shells.

m); 56,332. Patented July 10. 1866.

W'fnesses: W l5? varian- UNITED STATES PATENT Orrrca- AMAZIAH S. WARNER, OF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND HENRY REYNOLDS, OF NEW HAVEN, CONNECTICUT.

IMPROVED MACHINE FOR DRAWING CARTRIDGE-SHELLS.

Specification forming part of Letters Patent No. 56,332, dated July 10, 1566.

To all whom it may concern:

Be it known that I, AMAZIAH S. WARNER, of Springfield, in the State of Massachusetts, have invented certain new and useful Improvements in Machinery for Drawing Metallic Gartridge-Shells 5 and I do hereby declare that the followingis a full, clear, and exact description thereof, reference being had to the accompanying drawings, making part of this specificaion, in which- Figure 1 is a side elevation, and Fig. 2 a horizontal section at the line a: 00 of Fig. 1.

The same letters indicate like parts in both figures.

In the manufacture of metallic cartridgeshells, the metal is first struck up into a cup form, such as represented by the separate figure A, and by an after operation the cylindrical part is elongated or drawn to the required length by inserting a punch within the cup and forcing it through a die of the required diameter. My invention relates to an improvement in the machinery heretofore used for performing the said operation of drawing.

In machinery for this purpose prior to my said invention the means employed for feeding in and presenting the cup-like form to the action of the punch and die have been defective, and so defective that the operation could not be carried on near as fast as desirable, in an economical point of view, nor near as fast as the capabilities of the drawing mechanism would admit of.

The object of my said invention is to avoid the defects of the means heretofore employed for this purpose; and to this end my said invention consists in combining, with the punch and die for drawing the shells, the feeding in' or moving of the forms by friction to present them one by one to the action of the punch and die.

My said invention also consists in combining with the punch and die, and with a wheel or disk for moving the forms by friction, guide-plates for guiding them to the required positions, they sliding on the surface of the Wheel or disk, the forms being thus free to move into position as directed by the guides.

In the accompanying drawings, a represents the bed-plate of the machine, to which is properly secured, as usual, the die I), which is to determine the outer diameter of the cartridgeshells when completed, theeup-like forms being made of a slightly greater diameter, proportioned to the extent that the metal is to be drawn.

The punch c, of a suitable form, as usual, is secured to the lower end of a stock, d, adapted to slide between ways 6, and receiving motion from a crank-pin at one end of the drivingshaftf, mounted in the upper part of a standard, g. It is not deemed necessary to represent the crank-pin and the manner of its connection with the sliding stock 01, as that is well known and makes no part of my invention. It is to be observed that the axis of the punch and of the die are to be in line.

In front of the die I) there is a horizontal feeding-wheel, h, mounted to turn on a studpin, i, secured to the bed-plate. The upper surface of this feedingwheel, which is flat, should be in the plane of the upper surface of the die, and its periphery should run close to the front edge of the die. This feed-wheel is caused to revolve on its axis by a band, j, which passes partly around a grooved Wheel, 7;, on the drivingshaftf, under a guide-roller, l, around the feed-wheel, and thence, under an other guide-roller, to the grooved wheel k. To the upper surface of the die is secured a guide, m, which is slotted out to receive a sliding carrier, at, and when the carrier is pushed in to its utmost extent, its inner end and the end of the slot in the guide on form the boundaries of a hole just sufficient to hold one of the cup-like forms in the proper position to receive the punch and to be forced by it through the die, by which operation the drawing of the metal is effected. The carrier is connected by a bracket-piece, 0, with asliding bar, 19, which is drawn in one direction to move the carrier toward the punch and die by the tension of a spring, q, and in the opposite direction by a lever, 1", which receives motion from a cam, s, on the driving-shaft. One side of the slotted guide m extends only to the periphery of the feed-wheel, but the other side, m, extends for some distance over the feed-wheel, and the carrier should work freely but accurately in the slot between the two sides of the guide, and the slot should be of such width as to permit the cup-like forms to slide freely in it.

Just outside of the periphery of the feedwheel, and nearly in contact with it, there is a guide-plate, t, which extends above the surface of the feed-wheel to about the height of the cup-like forms. It extends from the slotted guide on about one-third of the circumference of the feed-wheel, and between this guideplate and the axis of the feed-wheel there is another guide-plate, a, which is attached to the stud-pin on which the feed-wheel turns, and which extends in a tangent toward the guide-plate t, and is then curved until it becomes concentric with the guideplate t, leaving a channel or guideway between the two of sufficient width for only one form. to slide in, but of sufiicient length'for several in a row.

The cup-like forms are placed in considerable number on the upper surface of the feedtable with their open ends up, and as the wheel rotates they are brought in contact with the guide-plates t and u, by which they are caused to arrange themselves in a row, and to approach the slot of the slotted guide m, until the one at the head of the column strikes the side of the carrier n, by which their farther advance is arrested, either the feed wheel sliding under them or the band for turning the feed-wheel slipping; but so soon as the carrier is moved out by the cam s and lever 1' to the position represented by red lines, (see Fig. 2,) the friction again starts the forms, and the one at the head of the column is moved into the slot of the slotted guide m, and it is then carried by the carrier over the die and under the punch, and there held until the punch enters and forces it into the die, at which time the carrier moves back to permit another to enter the slot.

By the means above described the friction by which the forms are moved is always active and ready to move or feed them in so soon as the carrier is drawn back out of the way;

and from this it will be seen that it is immaterial whether the feeding-wheel slips under the forms or the driving-band slips when the forms are arrested by the carrier or by the slotted guide, because the friction will be sufficient to move them when required, and to slip and permit them to remain at rest whenever they are stopped, either by the carrier or the slotted guide.

It will be seen from the foregoing that I am thus enabled to feed in the forms much more rapidly than by any of the means used prior to my said invention, while at the same time I avoid all the other diiiiculties heretofore experienced:

When the forms are made with the closed end so convex that they will not stand upright on the feed-wheel with their open ends, I eniploy a disk above the feed-wheel and parallel with it, which disk is formed with radial slots extending from the periphery inward. The slots should be of sufficient width to receive the forms freely, and this disk should be carried by friction, to carry them to the carrier, by which they will be transferred one by one to the punch and die.

'VVhat I claim a my invention, and desire to secure by Letters Patent, is

1. The combination of the means, substantially such as herein described, for moving and feeding the forms with the die and punch, substantially as and for the purpose specified.

2. In combination, the disk or wheel' for moving the forms, the guides for directing the forms, the carrier, or equivalent therefor, and the punch and die, substantially as and for the purpose specified.

AMAZIAH S. WARNER.

Vitnesses:

MILTON BRADLEY, N. P. HINMAN. 

